How to use AE 10 third-party plugins in AE 10.5 without reinstalling.

I have heard that there is a way to use AE 10 third-party plugins in AE 10.5 without reinstalling. A thread about this is supposed to exist in the AE forum but I could not find.
Its a technique developed by Rick Gerard.Thanks

Thanks Walter again, The post itself was not very enlightening to me although it gave me some guidelines. Actually there was a link in it to the red giant website. I checked it and then I found out where the media core folder was. So this was the simple solution for me that worked:

1) duplicate the whole content from of AE CS5's media core folder to the mediacore folder of AE CS5.5